Luminous unit



FIG. 1 is a perspective view of the luminous unit in accordance with an embodiment of the present invention;

FIG. 2 is a front view of the luminous unit thereof, the front view and the rear view being mirror images of each other;

FIG. 3 is a bottom view of the luminous unit thereof;

FIG. 4 is a right-side view of the luminous unit thereof;

FIG. 5 is a left-side view of the luminous unit thereof; and,

FIG. 6 is a top view of the luminous unit thereof.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for luminous unit, as shown and described. 